Slag trough or spout



(No Model.)

J. F. KEIPER.

SLAG THOUGH 0R SPOUT.`

No. 370,262. Patented Sept. 201 1887.

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FATTENT JOHN F. KEIPER, OF DENVER, COLORADO.

SLAG TROUGH OR SPOUT.

SPECIFICATION forming part of Letters Patent No. 370,262, datedSeptember 20, 1887.

Application filed October 6, 1886.

To (MZ whom it may concern,.-

Be it known that I, JOHN F. KEIPER, a citizen of the United States,residing at Denver, in the county of Arapahoe and State of Colorado,have invented certain new and useful Improvements in Slag Troughs orSpouts; and I do hereby declare the following to be a full, clear, andexact description of the invention, such aswill enable others skilled inthe art to whichit appertains to make and use the same.

This invention relates to slag troughs or spouts.

The object of the invention is to produce means for effecting theseparation of matte from slag more perfectly, quickly, and economicallythan has been possible heretofore.

The invention consists, essentially, of a slag trough or spout designedto be attached to a smelting furnace in such a manner as to receive theslag and matte at the point most convenient for its discharge, the saidtrough being Yformed with a depression into which the matte settles, andprovided with a suitable opening in the depressed portion, through whichthe matte is allowed to pass to a receptacle below, and having abridgecovering the upper portion of the trough, and a gate of convenient fornifor governing the passage of the matte through the opening to thereceptacle below, as hereinafter set forth.

I am aware that aslag-trough has been provided with a cooling-tube castin the bottom thereof; also, that a trough of this character has beenprovided with a valved opening in its bottoni, and that a slag-catcherand ironniixer,which receive the iron from the cupola and permit theworkman to rake the slag through a covered discharge spout at the sideof the trough, have been used prior to my invention, and I do notbroadly claim said constructions herein.

I have illustrated the invention in the accompanying drawings, in which-Figure l represents a central longitudinal vertical section of myimproved slag-trough. Fig. 2 is a plan view. Fig. 3 is an inverted planview showing two sections of trough, one showing the gate for regulatingthe outflow of metal. At the other trough this gate is not shown. Fig. 4is a crosssection of my trough,

and Fig. 5 is an end view.

Serial No. 215,435. (No model.)

In the drawings, A. represents a spout designed to be connected in anysuitable manner to a smelting-f'urnace, so that the matte and slag arecarried off and passed to the trough, by which the separation of thcmatte from the slag is effected.

B represents sections of the trough, of which any desired number, fromone upward, may be used, according to the amount of the matte in theslag. Each of these sections is provided with a depression near itscenter, into which the matte sinks, the slag passing through above thedepression.

In the bottoni of the breast portion is an opening, which is ofappropriate size to regulate the outflow of matte. In order that thesize of this opening may accurately be governed, I provide thelowerportion of the trough with a plate, b, having an opening correspondingto that in the bottoni of the trough, and provided, also, with anopening, d', at which point is pivoted a lever, a, which is capable ofbeing moved back and forth to entirely cover or expose to any desireddegree the opening through which the matte passes.

One end of each of the sections B is provided with what may be termed asoekct, c, and the other end is provided with a neck, f, the necks ofeach section being of such size as to fit into the socket of the nextadjoining section and leaving a plain upper surface for the passage ofthe slag. The sections are se cured together by passing bolts throughpreviously -prepared holes, f, near the ends of each section.

Vhen the troughs are used for separating matte from slag in which thisseparation is accomplished slowly, and it is therefore desirable that itbe allowed 'to escape slowly from the'trough, I provide the bridgesg,which are provided with flanges at their ends fitting into notches hin the sides of the trough. These bridges extend a sufficient distancedownward into the troughs to leavebut a small opening for the passage ofthe slag.

Each section of the trough is preferably provided with a cover, t',secured in place by hinges, upon which it is free to be turned up toexpose the interior of the trough.

The trough may be made of any suitable l material-such as asbestus,iron, or copper.

Having thus fully described my invention, and a gate for governing thepassage of the In What I claim as new, and desire to secure by mattethrough the opening, substantially as Letters Patent, is-- and for thepurpose set forth.

The herein-described slag .trough or spout, In testimony whereof I affixmy signature in 5 formed with a depression in which the matte presenceof two Witnesses.

settles, and provided with a suitable opening in the depressed portion,through which the Vitnesses: matte is allowed to pass, and having also aJACOB J. SNYDER,

JOHN F. KEIPER.

bridge extending downward into the trough, O. E. ADAMS.

